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Finding the Fourth Proportional to 14,490.71, 21,736.06 and 7,913.30

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Solution

The fourth proportional to 14,490.71, 21,736.06 and 7,913.30 is: 11,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.71 : 21,736.06 = 7,913.30 : x
  2. Step 2: Convert to fraction form
    14,490.71/21,736.06 = 7,913.30/x
  3. Step 3: Cross multiply
    14,490.71x = 21,736.06 × 7,913.30
  4. Step 4: Simplify right side
    14,490.71x = 172,003,998.15
  5. Step 5: Solve for x
    x = 172,003,998.15/14,490.71
  6. Step 6: Final answer
    x = 11,869.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.